Icom IC-410PRO Advanced Manual page 20

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6
TONE SQUELCH AND POCKET BEEP
Tone Squelch
The transceiver is equipped with 51 CTCSS
(subaudible) tone frequencies, and 104 DTCS codes.
CTCSS/DTCS operation enables you to communicate
in the silent standby mode, since you will only receive
calls from group members using the same CTCSS
tone frequency or DTCS code.
NOTE: CTCSS/DTCS function is not selectable on
CB channel 5, 35, and Repeater channel 5.
Information
The transceiver has 51 tone frequencies and
consequently their spacing is narrow compared to
units having 38 tones.
Therefore, some tone frequencies may receive
interference from adjacent tone frequencies.
D Setting the
CTCSS tone frequency/DTCS code
1) Enter the Set mode.
➥ Hold down [FUNC] for 2 seconds.
2) Select the CTCSS/DTCS menu.
➥ Push [FUNC].
• Selected CTCSS or DTCS code is displayed.
• Push [MONI] to select between CTCSS and DTCS
to enter the Setting mode.
CTCSS Setting mode
CTCSS tone frequency
List number
3) Set the desired CTCSS tone frequency or DTCS
code.
➥ Push [UP]/[DOWN].
4) Exit the Set mode.
➥ Hold down [FUNC] for 2 seconds.
DTCS Setting mode
[MONI]
DTCS code
List number
Selectable CTCSS tone frequency list
No.
Freq.
No.
Freq.
01
67.0
12
94.8
02
69.3
13
97.4
03
71.0
14
100.0
04
71.9
15
103.5
05
74.4
16
107.2
06
77.0
17
110.9
07
79.7
18
114.8
08
82.5
19
118.8
09
85.4
20
123.0
10
88.5
21
127.3
11
91.5
22
131.8
Selectable DTCS code list
No.
Code
No.
Code
01
023
22
131
02
025
23
132
03
026
24
134
04
031
25
143
05
032
26
145
06
036
27
152
07
043
28
155
08
047
29
156
09
051
30
162
10
053
31
165
11
054
32
172
12
065
33
174
13
071
34
205
14
072
35
212
15
073
36
223
16
074
37
225
17
114
38
226
18
115
39
243
19
116
40
244
20
122
41
245
21
125
42
246
D Turning ON the Tone Squelch
Before turning ON the Tone Squelch, set the desired
CTCSS tone frequency or DTCS code in the Set
mode.
➥ Hold down [MONI] for 2 seconds to turn ON the
Tone Squelch.
• Holding down [MONI] for 2 seconds switches
between "TSQL" (Tone Squelch), "TSQL ë"
(Pocket Beep) and OFF (cancel).
6-2
No.
Freq.
No.
Freq.
No.
23
136.5
34
177.3
45
24
141.3
35
179.9
46
25
146.2
36
183.5
47
26
151.4
37
186.2
48
27
156.7
38
189.9
49
28
159.8
39
192.8
50
29
162.2
40
196.6
51
30
165.5
41
199.5
31
167.9
42
203.5
32
171.3
43
206.5
33
173.8
44
210.7
No.
Code
No.
Code
No.
43
251
64
371
85
44
252
65
411
86
45
255
66
412
87
46
261
67
413
88
47
263
68
423
89
48
265
69
431
90
49
266
70
432
91
50
271
71
445
92
51
274
72
446
93
52
306
73
452
94
53
311
74
454
95
54
315
75
455
96
55
325
76
462
97
56
331
77
464
98
57
332
78
465
99
58
343
79
466
100
59
346
80
503
101
60
351
81
506
102
61
356
82
516
103
62
364
83
523
104
63
365
84
526
(Hz)
Freq.
218.1
225.7
229.1
233.6
241.8
250.3
254.1
Code
532
546
565
606
612
624
627
631
632
654
662
664
703
712
723
731
732
734
743
754

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Questions and answers

Heather Keeling
April 3, 2025

I have the ic-41 pro. I can transmit but no longer receive. I’m not aware of any settings changing. I’m using ch15. The screen shows sql , q and below that. OS S in black squares

1 comments:
Mr. Anderson
April 3, 2025

Your Icom IC-410PRO may be able to transmit but not receive on channel 15 due to one or more of the following reasons:

1. Quiet Mode (Selcall or Tone Squelch) is ON – If Quiet Mode is enabled, the radio will not unmute unless it receives the correct Selcall or tone. Turn OFF Quiet Mode in the Set mode.

2. Tone Squelch setting mismatch – If the tone squelch is set incorrectly or does not match the other radios, you will not hear incoming transmissions. Set the correct tone squelch setting for the user group.

3. Squelch level is set too high – If the squelch level is too high, weak signals may be blocked. Decrease the squelch level in the Set mode.

4. Monitor function is OFF – If the Monitor function is OFF, you might not hear transmissions that don’t match the squelch settings. Press [MONI] to temporarily open the squelch and check for incoming signals.

Check and adjust these settings to restore receiving capability on channel 15.

This answer is automatically generated

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